Your Opinion Sucks.
Your opinion is not my opinion and therefore it sucks.
This is part of the problem with how a lot of people approach interacting with others. There is no allowance for people that think differently than you.
I mean -- obviously, if people don't think exactly like you, then there's something wrong with them, right?
There's a few things that really push my irritation buttons, one of which is people stating their opinions as fact. The related annoyance to this is people thinking that everyone feels like they do, or that they should. That you, personally, get to decide what people are allowed to like. Or what people are allowed to feel or think about a particular subject.
For example, I'm pretty deep into the hobby of building mechanical computer keyboards, customizing them, and I like collecting keyboards that are examples of different types of design, layouts, mounting styles, etc.
I watch a fair amount of streamers on Twitch that are also into this hobby and do builds of keyboards live on-stream. And the vast majority of people in the community that join in on those streams, or conduct the streams themselves are the types that recognize that what is 'good' is a matter of preference. They get that one keyboard, or how a keyboard is built, or how it looks with a particular keycap set is entirely up to each individual. That what they might like may not be what others like and that is perfectly ok and normal.
But of course, just like with any other aspect of life, there are some people that like to shit on things. That like to say that particular keyboard suck ass, or some other derogatory statement. And ok, that's fine. You think something sucks. We get it. But often times these people will have no allowance for others to feel differently. That you are wrong for liking something they don't -- your opinion on this is wrong, and you're a fucking doofus for even daring to think differently than they do.
Then there are the more subtle versions of this where someone claims something to the effect of this thing is better than that thing, and present this as just the way it is. As a fact. A recent example for me is a particular keyboard streamer (not naming, don't ask) claims that one particular method of building keyboards sounds better than this other method. I immediately thought that was bullshit because they were mentioning two different methods that honestly can't affect sound to any significant degree.
So maybe they have better hearing than me? Entirely possible, the person in question is much younger than I am, and I know my hearing isn't what it was in my more youthful days. But just to declare one as better -- period -- is honestly pretty egotistical. Like how did you get appointed to the position of deciding what sounds better for everyone in existence?
I grew up listening to a lot of heavy metal, industrial music, and various angry electronica. The crowds I hung out with quite often bashed on people for being into 'lame music' like pop or whatever was the top 40 at the time. The term 'guilty pleasure' was thrown around sometimes. It basically meant any music that you were embarrassed to like, or that if was revealed that you liked it, you stood a pretty good chance of catching shit for it. And back then, if you were male, god forbid you liked something that wasn't considered 'masculine'. I mean, if you dared to like ABBA or any disco, you were in danger of being labelled gay. Ahh yesss, the 'good ole days'.
All that nonsense of not being allowed to like particular genres, or certain music being 'gay' always irritated me to no end. The whole idea of a 'guilty pleasure' when it comes to music always felt like bullshit. Why should you feel guilty for liking some particular song or genre of music. I hated people that relentlessly bashed others for not being cool just because they didn't listen to what they did.
"You aren't ok unless you think exactly like me."
This is the kind of intolerant bullshit that some people just can't get past and that has sunk deep into politics and a lot of aspects of today's culture.
I pride myself on being open to differing view points. If you can make a decent argument for your perspective on a particular subject, then great. Bring it to the discussion, I'll almost always listen and consider (ok maybe not if I'm three sheets to the wind...I sometimes get a little--ok a lot--snarky).
That's not to say that I'm always about hearing 'both sides' of every subject if for example the debate is about denying someone's right to exist. Or if the argument is that someone's belief in a particular religion entitles them to oppress others in some way.
Live and let live is really what my point boils down to. And if you think other people's lifestyle is gross or blasphemy, etc, keep it to your damn self. So many people think government should mind their own business and stay out of their lives, but somehow seem perfectly ok with imposing their beliefs on others. Few things are worse in my book than hypocrisy.